<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Graphical interface for Windows</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="The Hugs 98 User's Guide" HREF="index.html"><LINK REL="UP" TITLE="Other ways of running Hugs" HREF="others.html"><LINK REL="PREVIOUS" TITLE="Compiling modules that use the Foreign Function Interface" HREF="ffihugs.html"><LINK REL="NEXT" TITLE="Hugs vs Haskell 98 and addenda" HREF="haskell98.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="hugs-ug.css"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >The Hugs 98 User's Guide</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="ffihugs.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 4. Other ways of running Hugs</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="haskell98.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="WINHUGS" >4.3. Graphical interface for Windows</A ></H1 ><P ><B CLASS="COMMAND" >WinHugs</B > is a friendly Windows user interface to Hugs. In addition to the console commands of Hugs (see <A HREF="using-hugs.html" >Chapter 2</A >), it provides:</P ><P ></P ><UL ><LI ><P >colorized prompt and various other items to aid reading.</P ></LI ><LI ><P >hyperlinks (underlined and in blue); clicking on a hyperlink in an error message opens an editor at the offending line.</P ></LI ><LI ><P >a convenient dialog for control of options.</P ></LI ><LI ><P >menu and button shortcuts for various commands, such as load.</P ></LI ><LI ><P >browse commands to view the class hierarchy and items in scope.</P ></LI ></UL ><P >In addition, some escape codes are supported, in particular those which change the foreground and background color.</P ><DIV CLASS="MEDIAOBJECT" ><P ><IMG SRC="winhugs.png"></P ></DIV ><DIV CLASS="EXAMPLE" ><A NAME="AEN1089" ></A ><P ><B >Example 4-1. Getting started with WinHugs</B ></P ><P >The graphical interface is mostly self-explanatory, but this is a small introduction to the most commonly used features.</P ><P >Create a file called <TT CLASS="FILENAME" >Main.hs</TT >, and inside put the text <PRE CLASS="PROGRAMLISTING" >module Main where main = putStrLn "Hello, WinHugs!</PRE > Note that this program contains a syntax error: the closing quote is missing. Now run <B CLASS="COMMAND" >WinHugs</B >, and click on open (<SPAN CLASS="GUIMENU" >File</SPAN >-><SPAN CLASS="GUIMENUITEM" >Open</SPAN >) and browse to the file <TT CLASS="FILENAME" >Main.hs</TT >. When <B CLASS="COMMAND" >WinHugs</B > loads the file, it reports an error, along with a link giving its location. Click on this link, and the file will open in your editor, at the appropriate line. (If the file doesn't open at the correct line, visit the options, and under the <SPAN CLASS="GUILABEL" >WinHugs</SPAN > tab set the <SPAN CLASS="GUILABEL" >Editor</SPAN > value appropriately.)</P ><P >After you've fixed the error, save the file, switch back to <B CLASS="COMMAND" >WinHugs</B > and click on the <SPAN CLASS="GUIBUTTON" >Run</SPAN > button. <B CLASS="COMMAND" >WinHugs</B > will automatically reload your file, and you can watch it produce a message.</P ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="ffihugs.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="haskell98.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Compiling modules that use the Foreign Function Interface</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="others.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Hugs <I CLASS="FOREIGNPHRASE" >vs</I > Haskell 98 and addenda</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
